The physics of sports
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The Physics of Sports. Fermilab. Tevatron, 4 miles around. Main Injector, 2 miles around. Physics explains things that are very, very large. Physics explains things that are very, very small. Physics explains things that are right in front of us. Newton’s First Law.

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The Physics of Sports

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The Physics of Sports


Fermilab

Tevatron,

4 miles around

Main Injector,

2 miles around


Physics explains things that are very, very large.


Physics explains things that are very, very small.


Physics explains things that are right in front of us.


Newton’s First Law

  • Objects at rest remain at rest

  • Objects in motion remain in motion

    UNTIL YOU APPLY A FORCE


Newton’s Second Law

F = ma

What forces are important in sports?


Flight Path


The Home Run Swing

  • Ball arrives on 100 downward trajectory

  • Big Mac swings up at 250

  • Ball takes off at 350

    • The optimum home run angle!

Courtesy of A. Nathan, University of Illinois. http://www.npl.uiuc.edu/~a-nathan/pob/


Newton’s Third Law

For every action there is an equal and opposite reaction.


Conservation of Energy

Potential Energy

Kinetic Energy

Kinetic Energy

Compression Energy

Heat and Sound Energy


Conservation of Momentum

If m1 = m2, then v1 = v2


Conservation of Momentum


Equipment features

  • Ball material, size, shape, and texture

  • Properties of the club, bat, racquet, or stick


http://ffden-2.phys.uaf.edu/211_fall2002.web.dir/Daniel_Lenord/vault.html


Air Resistance (drag)


FRICTION


Resistance & Friction


The Power of Spin


Spins in Figure Skating


Reaction Time


Downhill skier speed: 80 mph


Reaction Time in Baseball

Courtesy of R. Adair through A. Nathan.


Measure your reaction time…


Compare your reaction time…

Equation used: t = √((2d)/g)


Physical laws explain the world

  • Newton’s Laws of Motion

  • Conservation of Energy

  • Conservation of Momentum

    These laws help us explain everything

    about sports.

    Physics really is everywhere!


Visit Fermilabwww.fnal.gov

  • Buffalo viewing

  • Bicycling

  • Walking

  • Roller blading

  • Canoeing

  • Fishing


Visit Fermilab

  • Lederman Science Center

  • Tours

  • Saturday morning physics

  • Ask a Scientist

On-line activities:

www-ed.fnal.gov


The Physics of Sports


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